The semi-detached house at 1 Blomfield Rd. in Liverpool is a modest three-bedroom with a stucco exterior, wood-paneled walls, and red shag carpeting. In a typical scenario, such details would make the house feel outdated and undesirable. But Tuesday’s sale was far from typical: The property, which was home to John Lennon’s mom until her death in 1958, sold at auction for $229,000.